673909801 has 8 divisors (see below), whose sum is σ = 738157320. Its totient is φ = 612396288.

The previous prime is 673909759. The next prime is 673909849. The reversal of 673909801 is 108909376.

It can be written as a sum of positive squares in 4 ways, for example, as 44903401 + 629006400 = 6701^2 + 25080^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 673909801 - 2⁹ = 673909289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673909871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682986 + ... + 683971.

It is an arithmetic number, because the mean of its divisors is an integer number (92269665).

Almost surely, 2^673909801 is an apocalyptic number.

It is an amenable number.

673909801 is a deficient number, since it is larger than the sum of its proper divisors (64247519).

673909801 is a wasteful number, since it uses less digits than its factorization.

673909801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367003.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 673909801 is about 25959.7727455384. The cubic root of 673909801 is about 876.7328060638.

The spelling of 673909801 in words is "six hundred seventy-three million, nine hundred nine thousand, eight hundred one".